August loehnee



(No Model.)

A. LOEHNER.

RAILWAY TRACK DRILL.

Patented Feb. 16,1886,

0 e 8 8 w W UNITED STATES PATENT OFFICE.

AUGUST LOEHNER, OF ST. LOUIS, MISSOURI.

RAILWAY-TRACK DRILL.

SPECIFICATION forming part of Letters Patent No. 336.487, dated February 16, 1886.

Application filed December 3, 1885. Serial No. 184,632.

To all whom, it may concern.-

Be it known that I, AUGUST LOEHNER. a citizen of the United States, residing at St. Louis, in the county of St. Louis and State of Missouri, have invented certain new and useful Improvements in Railway-Track Drills;

and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to railway-track drills; and it consists in certain improvements in the construction of the same, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a plan view of a track-drill provided with my improvement. Fig. 2 is a side view of the same. Fig. 3 isa view of the drillholding device detached.

A designates the top bar, on which is placed the screw-housing B, which may be moved along the bar in either direction, and may be set opposite to any point where a hole is to be drilled in the track-raiLto which the device is applied and secured. The housing B is secured fast to the bar by means of a screw, (it, which bears against a key, b, which slides along the bar with the housing and prevents the screw from indenting the bar, so the latter is kept smooth. A screw, 0, is placed within and carried by the housing, the head of the screw being downward, and having a socket in which is placed a double cone, 0, one having an angular point, a, and the other an angular notch or recess, 0 so that it may connect with any drill, either pointedor grooved.

(No model.)

D indicates the hook-arms to connect with cured to bar A by means of bolts 01. The screws e are for the purpose of securing the arms D to bar A at any points desired, it be ing necessary sometimes to bring the arms near each other, as when drilling a hole near the end of one rail when no rail has been laid adjoining it.

E designates a clamping device, one being placed on each hook-arm to secure it firmly to the rail, said clamp being in the form of a lever or pivoted dog, F, and a seat, G, to which it is held by bolt f. A screw, passes through the lever F, and being driven against arm D closes the toothed dog tightly against the base of the rail and holds the frame firmly thereto.

I claim- 1. In combination with bar A of a drillframe, a housing, B, and an inverted screw entering said housing and provided with a recess to receive a drilling-tool, substantially as and for the purpose described.

2. In combination with bar A and a toolholding device sliding thereon, a conical toolholding device having point 0 and notch a", as set forth and described.

3. In combination with the hook-arms of a track-drill frame, a clamping device provided with a pivoted dog, F, and adj usting-screw g, substantially as set forth.

In testimony whereof I have aflixed my signature in presence of two witnesses.

AUGUST LOEHNER.

Witnesses:

EDW. B. ROTH, JAS. TIERNEY.

the rail to be bored, the said arms being se- .40 

